PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/09/09-17:57:20
G02     46.2           44.9                8.3 +/-    0.98      11.2 +/-    0.98  0.030 / 0.030
G05     92.4           70.4                8.5 +/-    0.49       8.9 +/-    0.49  0.030 / 0.030
G12     184.2          43.5               10.9 +/-    1.18      15.0 +/-    1.18  0.050 / 0.070
G25     255.8          58.4                9.8 +/-    0.75      11.3 +/-    0.75  0.060 / 0.080
G29     319.8          42.3                9.0 +/-    1.10      12.6 +/-    1.10  0.040 / 0.060